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Finding the Fourth Proportional to 18,903.36, 26,089.14 and 10,948.08

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Solution

The fourth proportional to 18,903.36, 26,089.14 and 10,948.08 is: 15,109.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,903.36 : 26,089.14 = 10,948.08 : x
  2. Step 2: Convert to fraction form
    18,903.36/26,089.14 = 10,948.08/x
  3. Step 3: Cross multiply
    18,903.36x = 26,089.14 × 10,948.08
  4. Step 4: Simplify right side
    18,903.36x = 285,625,991.85
  5. Step 5: Solve for x
    x = 285,625,991.85/18,903.36
  6. Step 6: Final answer
    x = 15,109.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.